Combine polling and visibilitychange event

[jedie]

Think in most cases it makes no sense to poll if the browser tab is not visible, isn't it? e.g.: If the user will work with many tabs, then all tabs will create poll requests, but they may be useless because the update can only be seen on a visible browser tab ;)

It's possible to realize this today, e.g.:

hx-trigger="every 5s [document.visibilityState === 'visible'], visibilitychange[document.visibilityState === 'visible'] from:document"

This does:

• Stop polling if the page is not visible
• If the page changed from invisible to visible -> poll immediately
• If page stays visible -> poll periodically

Think it should be a easier way to do this.

See also discussion: https://github.com/bigskysoftware/htmx/discussions/821